/*
 * Copyright 2017 Huawei Technologies Co., Ltd
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.servicecomb.swagger.invocation.context;

import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

import javax.ws.rs.core.Response.Status;
import javax.ws.rs.core.Response.StatusType;

import io.servicecomb.foundation.common.utils.SPIServiceUtils;

public class HttpStatusManager {
    private Map<Integer, StatusType> statusMap = new ConcurrentHashMap<>();

    public HttpStatusManager() {
        for (Status status : Status.values()) {
            statusMap.put(status.getStatusCode(), status);
        }

        SPIServiceUtils.getAllService(StatusType.class).forEach(status -> {
            addStatusType(status);
        });
    }

    public void addStatusType(StatusType status) {
        if (statusMap.containsKey(status.getStatusCode())) {
            throw new Error("repeated status code: " + status.getStatusCode());
        }

        statusMap.put(status.getStatusCode(), status);
    }

    public StatusType getOrCreateByStatusCode(int code) {
        StatusType statusType = statusMap.get(code);
        if (statusType != null) {
            return statusType;
        }

        statusType = new HttpStatus(code, "");
        addStatusType(statusType);

        return statusType;
    }
}
